Excelsior-machine.



0. GHAFFEY.

EXOELSIOR MACHINE.

APPLIOATIOK FILED 3123.1, 1913.

1,107,03 1. Patented Aug. 11,191

4 SHEETS-SHEET l.

if: 51mm,

THE NORRIS PETERS co PNomLITuQ. IASMIIGIDII. ll 1- 0. GHAPPEY.

EXGELSIOR MACHINE.

APPLICATION FILED FEB. 7, 1913.

Patented Aug. 11, 1914.

4 SHEETS-SHEET 2.

TH'E AQRRIS PETERS C0., PHOr LJTHO WASHINGTON, D. C.

O. GHAFPEY. EXOELSIOR MACHINE. APPLICATION FILED IEB.7, 191s.

Patented Aug. 11, 1914.

4 SHEETS-SHEET 3.

awe/whom THE AORRIS PETERS CO4v PHoro-LITHQ. WASHINGTON. D4 C.

0. CHAPTER EXGELSIOB. MACHINE;

APPLICATION FILED 1'33. 7, 1913.- Patented Aug. 11, 1914,

4 SHEET8SHEET 4.

THE NORRIS PETERS 50.. PHOTO-LITHO. WASHINGTON. 04 C,

UNITED s'rA'rEs PATENT OFFICE.

OSCAR CHAFFEY, 0F ALLIANCE, CALIFORNIA.

EXOELSIOR-MACHINE.

Specification of Letters Patent.

Patented Aug. 11, 1914,

AppIication filed February 7, 1913. Serial No. 746,906.

One object of the invention is to provide a machine of this kind whichwill do its, work very rapidly and with the minimumj expenditure ofpower.

Another object of the invention is to provide a machine of improvedconstruction in which the scorers follow the grain of the wood, therebyproducing excelsior" of excellent quality.

Another object is to effect improvements in the construction of thecutter wheel.

Another object is to effect improvements in the construction andarrangement of the knives.

Another object is to effect improvements in the construction andarrangement of the scorers or spurs.

Another object is to effect improvements in the construction of thecarriage.

Another object is to efi'ect improvements in the construction of thefeed mechanism. Another object is to provide means for equalizing theoperation of the upper and lower feed rollers.

Another object is to provide improved means for adjusting the feedrollers to permit the insertion of the blocks or stock.

Another object is to provide improved cated by the line a-'a of Fig. 1.Fig. 6 is a detail transverse sectional view on the plane indicated bythe line 6-?) of Fig. 1. Figs. 7, 8, 9 and 10 are detail views. Fig. 11is a detail front elevation of a portion of the cutter wheel and showinga set of the scorers thereon. Fig. 12 is a detail inner edge elevationof the same The supporting frame of my improved excelsior machine has apair of spaced sills 1 connected together at their ends by cross pieces2. A pair of horizontally arranged beams 3 T are supported at their endsby inclined standards A which rise from the ends of the sills and attheir centers by vertical standards 5 which rise from the ends of thesills, inclined braces 6 being also provided, the lower outer ends ofwhich bear in the angles between the sills and the standards 4 and theupper, inner ends of which bear in the angles between the beams 3 andstandards 5. Bolt rods 7-8 are also employed to secure the beams on theupperends of the standards, the said bolt rods extending through thebeams and also through the sills. The beams are connected together attheir ends by cross pieces 9. On the central portions of the beams arebearings 10. A vertically arranged cutter wheel 11 has its shaft 12mounted in bearings, the cutter wheel being arranged between the beams 3and the shaft being provided at its rear end with a power pulley 13 orother suitable driving element for rapidly rotating the cutter wheelwhen the machine is in operation.

The cutter wheel is of considerable diametrical extent, in practice,usually eight feet six inches in diameter so as to cause the scorers orspur cutters to substantially follow the grain of the wood and therebyproduce excelsior of superior quality. In

practice, the cutter wheel is revolved at the speed of about from threehundred and fifty to four hundred revolutions per minute. This wheel ispreferably made of wood but may be made of other suitable material, thespokes 13 extending from the hub plates 14: to the rim 15, the latterbeing provided with a tire 16. The front face of the rim is the workingface of the wheel and said wheel is channeled on its opposite face,being provided with inner and outer flanges 18. The wheel rim isprovided with alternately arranged equidistant radial openings 1920, theformer in advance of the latter, in the direction of the rotation of thewheel as indicated by the arrow in Fig. 1 and the said openings 20 beingalso provided with rearwardly inclined walls, their rear walls beingextended as at 21 and the shaving knives 22 being secured by bolts 23 tosaid extended inclined walls 21 so that the beveled cutting edges 24 ofthe shaving knives are presented at the working face of the wheel rim.These shaving knives have slots 25 for the reception of the clampingbolts, the scoring or spur cutters 26 being arranged in the openings 19,at right angles to the working face of the cutter wheel and bearingagainst supporting walls 27 at the rear sides of the openings 19, theprojecting points or outer ends of the said scorers or spurs beingtransversely beveled each on one from thefront beam 3 at a pointopposite one side of the working face of the cutter' wheel. The verticalside standards 34 of this frame are connected at their upper ends by across bar 35 and have outturned portions 36 at their lower ends andsecured as by means of bolts or screws on the said beam. Inclined braces3738, which converge upwardly, are arranged at opposite sides of theframe 33 their upper ends being united to extensions of the cross bar 35and the said frame is provided at its upper end with bearings 39 thesaid bearings being formed on arms 40 which project from the front sideof said frame. A rock shaft 41 is mounted in these hearings and isprovided with a pair of arms 42 and also has an arm 43 at its inner end.A supporting arm or bracket 44 projects forwardly and outwardly from oneofthe standards 34 of the frame 33. At the upper end of the brace 37 isa connected to the front ends of these cross bars. Standards 34 areprovided with vertical slots, 48. Bearings 49. are connected by U-bolts50 to blocks 51, the said U-bolts operating in. the slots 48 and theblocks operating' and being vertically movable on the standards 34.These bearings are connected by pitmans52 to the rock arms 42 of shaft41. An upper feed roller 53 is mounted in bearings 49 and one end of itsshaft is extended and'is' provided with a sprocket wheel 54. A lowerfeed roller 55 is mounted in bearings 56at. the base of the frame 33 andhas one end of its shaft extended and provided with a sprocket wheel 57.A vertically movable actuating and equalizing rod 58 operates in a guide59 with which the frame 33 is provided, the said rod having cross bars6061 at its upper and lower ends, the centers of the said cross barsbeing secured to said rod. A sprocket chain 62 connects the front endsof the cross bars and engages the front side of the sprocket wheel 54 ofthe upper feed roller. A sprocket chain 63 connects the rear ends of thecross bars and engages the rear side of the sprocket wheel 57 of thelower feed roller each chain is single and in effect acts as a rack bar.Hence, when the rod 58 with its sprocket chains is moved downwardly, thesprocket chains by their engagement respectively with the sprocketwheels of the upper and lower feed rollers cause the feed rollers torotate in the required direction to move a block or stock held betweenthem toward the working face of the cutter wheel, as will be understood.

To operate the rod 58 and, hence, cause the feed rolls to be thusoperated, I provide a rock shaft 64 which is mounted in bearings 65 onone of the standards 4 and has an arm 66 at its front end and an arm 67at its rear end, the latter being connected by a link (38 to the lowerend of the rod 58. the said link including a cushioning chain (39. Aweight 70 is adjustably mounted on the arm 66. Hence, the weight,through the instrumentality of the rock shaft and the link causes therod 58 to be pulled downwardly and thus causes the feed rolls to beoperated.

To enable the rod 58 to be raised so as to reset the feed mechanism foranother block, I provide a lever 71 which is mounted as at 72 on the arm44 and a chain 73, the lower end of which chain is attached to the arm67 of the rock shaft 64, the upper end of said chain being attached tothe upper side of a segment 74 with which the lever 71 is pro vided, thesaid segment having a grooved face for the reception of the chain. Bydepressing the lever 71, the weight 70 will be raised and the rod 58will be also raised, thus causing the sprocket chainsand connectionshereinbefore described to rotate the feed rollers in reverse directions.The spring 69 serves to take ofi any sudden jar that may come from therock arm and weight during the operation of the machine. Since both ofthe feed rolls are positively driven at the same rate of speed and underthe same strain by the action of the rod 58, the chains 6263 and thesprocket wheels 54-57 of both the feed rolls act in unison under allconditions on the upper and lower ends of the block or stock and, hence,the block or stock is fed evenly to the working face of the cutterwheel.

Since the upper feed r011 53 is mounted in vertically movable bearings,the distance between the upper and lower feed rolls may be variedaccording to the size of the blocks or stock and thus the carriage isadapted for feeding stock or blocks of all sizes to the working face ofthe cutter wheel. In order to exert downward pressure on the upper feedroller, to keep the latter in engagement with a block when the machineis in operation, I provide a foot lever 75 which is pivotally mounted ata point spaced from its ends on a block or hearing 76 which is securedon the inner end of the platform 31 near the rear end of said platform.A rod 7 7 connects the rear end of the said lever to the arm 43 of therock shaft 41 and a link 7 8 connects the said lever, at a point nearits front end, to a fixed portion of the main frame as at 79, the saidlink including a contractile spring 80. The tension of this spring bydrawing upwardly on the front end of the lever, causes the rear end ofthe lever to be depressed and, hence, the link 77 and arm 43 cause therock shaft 41 to be partly turned to depress the arms 42 of said rockshaft so that the links 52 press the upper feed roller downwardly andkeep the latter in engagement with the upper side of the block or stock.

The feed rollers are provided with transverse annular channels and alsowith longitudinal peripheral channels to form teeth 81 on the feedrollers for engagement with the upper and lower sides of the blocks orstock. The Working face of the wheel is provided at points between theblades and scorers with radially arranged wear plates 81 which, inpractice, are steel strips about an inch wide and one-fourth of an inchthick for the block to bear against, the said plates serving to preventwear of the working face of the wheel and being renewable when worn. Thedepth of the cut of the machine is regulated by setting the knives. Themachine makes a very clean and even cut excelsior of high grade and iscapable of adjustment so line as to cut excelsior the four hundredthpart of an inch in thickness without difficulty.

While I have herein shown and described a preferred form of myinvention, I would have it understood that changes may be made in theform, proportion and construction of the several parts without departingfrom the spirit of my invention and within the scope of the appendedclaims.

I claim 1. In an excelsior machine, in combination with a rotary cutterhaving a working face on one side, a carriage opposite the working faceincluding a frame, a pair of feed rolls mounted for rotation in saidframe and each having a rotary gear element, a longitudinally movableactuating element having rack devices s aced and faced in oppositedirections an arranged out of line with each other and each engaging oneside of one of the rotary gear elements, said gear elements beingengaged by said rack devices one on the opposite side from the other, aweight, means including a cushioning device con necting the weight tosaid longitudinally movable element to cause the said longitudinallymovable element to move in one direction and impart feeding rotation tothe rolls and means to elevate the weight and means to move saidlongitudinally movable element in the reverse direction to impartretrograde rotation to the feed rolls.

2. In an excelsior machine, in combination with a rotary cutter having aworking face on one side, a carriage opposite the workin face andincluding a frame, a pair of feed rolls mounted for rotation in saidframe and each having a rotary gear element, a longitudinally movableactuating element having rack devices spaced and faced in oppositedirections and arranged out of line with each other and each engagingone side of one of the rotary gear elements, said gear elements beingengaged by said rack devices one on the opposite side from the other, a

rock shaft having a pair of arms, means, in-

eluding a cushioning spring, connecting one of said arms to saidlongitudinally movable element, and a weight adjustably mounted on theother arm, to move the said longitudinally movable element in onedirection and impart feeding rotation to the rolls and means to turn therock shaft in the required direction to elevate the weight and move saidlongitudinally movable element in the reverse direction to impartretrograde rotation to the feed rolls.

3-. In an excelsior machine, a frame, a pair of spaced feed rollersmounted for revolution in said frame, one of said rollers being alsomounted for movement toward and from the other and each of said rollershaving a gear wheel, a longitudinally movable actuating element, rackelements carried by said longitudinally movable element and respectivelyengaging opposite sides of said roller gears, to rotate the latter inreverse direction to elevate the weight and move nected to saidlongitudinally movable element to move the latter in one direction, andmeans to move said longitudinally movable element in the reversedirection.

In testimony whereof I affix my signature in presence of two witnesses.

OSCAR CHAFFEY.

Witnesses:

LAURENCE (form, J r., RICHARD A. GREEN.

Copies oi this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. 0.

